Improvement in machines for setting and upsetting saws



l NITED STATES PATENT OFFICE.

ABIATHE A. HIEBEED, 0E HERMITAGE, NEw YORK.

IMPROVEMENT IN MACHINES FOR SETTINGAND UPSETTING SAWS.

when it is connected with the guide A. The Be it known that I, ABIATHE ASHLEY H1B- dies and guide are all hardened the usual BERD, of the village of Hermitage, in the way and the temper drawn to a straw color county of Wyoming and State of New York, in order to prevent their being bruised in have inventcda new Improvementin Machines the operation of setting and upsetting. for Setting and Upsetting the Teeth of Mill l The abovedescribed tool or machine is a and Crosscut Saws, also Circular Saws for proper size for the heaviest saws. One much Ripping and Crosscutting; and I do hereby smaller would be required forsmall saws with declare that the following is a full, clear, and fine teeth. exact description of the construction and Vhen all is finished, as above described, operation ofthe saine, reference being had to then put the die E on the tapered side of the the annexed drawings, making a part of this guide A, and the die D opposite put on the specification, in whichclasp B and set-screw C, and screw tight Figure l is an elevation; Fig. 2, a section together, as represented in Fig. l, and it is through the center; Fig. 3, an end showing ready for use, which is las follows: After clasp, dies, and guide or handle; Fig. 4, a the tooth is led to a proper shape, place the plan; Fig. 5, a handle or guide; Fig. 6, dies. tool onto the point of the tooth., with the set- The same letters indicate the same parts Screw C up, then strike the opposite end with in all the figures. a light hammer until the tooth is suiiciently A is a handle or guide; B, clasp for holdwide on the point or edge f'or cross-cutting ing all together; C, set-screw in clasp B; D, Saws, use the die E with the triangulargroove` die for millsaw and circular saw for ripping; placing the guide on the face ofthe tooth and E, die for crosscutting saws,either straight Strike with a light hammer, as before. until or circular. the edges are brought out level and the de- The construction of said set and upset is as Sred set given t0 the tooth. follows: The handle 0r guide A is forged from All saws wear on the outside of the tooth. three-quarter inch Octagon cast-steel about Therefore the object of this machine is to keep six and onehalf inches long, with one end the outside of the tooth straight and the made one-half inch square and about one and edges ush, so as to insure their running free onehalf inch long, the side next to E tapered, I through the timber. commence one inch from the shoulder and I am aware that there have been upsets for taper so as to leave the end one-half inch mill-saws, but differently constructed. They wide and seven-sixteenths thick, leave shoulwere made solid-that is, the die D and handle ders square to prevent the dies and clasp from or guide A were one piece, and it is impossislipping' while being used. The clasp B-is ble tokeep an acute angle where the edge made of the best relined iron two inches long or point of the saw-tooth comes in contact T0 aZZ whom, it may concern:

'and sevenveighths inch square, with mortise while upsetting. Consequently there isa very through one and one-fourth inch long and important part lost, the point of the tooth is onehalf inch wide, one end being left -onedulied inthe operation and requires ling a half inch thick to insure strength of nut for second time, which leaves a rough wire-edge set-screw C. The set-screw C is made of steel and the point soft,while my mode of upsetting with thread iive-eighths inch long and oneleaves the point sharp, smooth, and hard. hall' inch diameter, with head one-half inch Therefore it will stand much longer without square. The die D is made of cast-steel onerefiling.

half'inch wide, three-eighths thick, and one What I claim `as my invention, and desireanrl one-fourth inch long, with the side at to secure by Letters Patent, is-

one end beveled to an angle of about fifty The dies D and E and their arrangement, degrees, or any other angle that will suit substantially as and for the purpose specified. mill and circular saws for ripping better. A. A. HIBBERD. The die E is forged the same size of D-one Witnesses: inch long with triangular groove in one side R. L. CHARLES, at the end in the center, so as to form a point W. H. PAGE. 

